Overview
Features and Benefits
- 660ns Conversion Time
- 20-Pin Narrow DIP Package
- No External Clock
- Pin-Compatible Upgrade for Industry-Standard 7820
- 100kHz Input Signal Bandwidth
- Bipolar/Unipolar Inputs
- Single +5V or Dual ±5V Supplies
- Ratiometric Reference Inputs
- Static and Dynamic Tested
- Internal Track/Hold
Product Details
The MX7821 high-speed, microprocessor-compatible (μP), 8-bit analog-to-digital converter (ADC) is a plug-in upgrade fro the industry-standard 7820. The MX7821 uses a half-flash technique, resulting in a 660ns conversion time vs. 1.36μs for the 7820. A VSS pin, not supplied by the 7820, supports dual power supplies and bipolar analog inputs.
The MX7821 has track-and-hold function capable of digitizing a 100kHz signal, and is tested for both its static and dynamic capability. The converter-μP interface appears as a memory location or input/output port that requires no external interface logic. The data outputs use latched, three-state buffered circuitry for direct connection to a μP data bus or system input port. The MX7821 has an overflow output for cascading devices to attain higher resolution. The ADC's input/reference arrangement enables ratiometric operation. For a detailed description of MX7821 operation, refer to the MX7820 data sheet.
Applications
- Audio Systems
- Digital-Signal Processing
- High-Speed Data Acquisition
- High-Speed Servo Loops
- Telecommunications
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Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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